A research team headed by Professors Peng Xinhua and Jiang Min from the Spin Magnetic Resonance Laboratory at the University of Science and Technology of China (USTC) has achieved groundbreaking progress in the realm of quantum precision measurement of exceedingly weak magnetic fields. By harnessing the interaction of atomic spins as a pivotal resource, they have, for the first time, elucidated the quantum amplification mechanism of magnetic fields in interacting atomic spins. The team not only theoretically forecasted but also experimentally realized both the amplification and anti-amplification effects of magnetic fields in interacting spin gases. This milestone achievement paves the way for advancements in quantum precision measurement technology. The pertinent research findings were published on May 8 under the title "Amplification Mechanism with Interacting Atomic Gas".